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Optical drive problems NOTE: High-speed optical drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the media. NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives. Adjust the Windows volume control — Click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up by clicking the slidebar and dragging it up. Ensure that the sound is not muted by clicking any boxes that are checked. Check the speakers and subwoofer — See Sound and Speaker Problems. Problems writing to an optical drive Close other programs — The optical drive must receive a steady stream of data during the writing process. If the stream is interrupted, an error occurs. Try closing all programs before you write to the optical. Turn off standby mode in Windows before writing to a disc — Search for the keyword standby in Windows Help and Support for information on power management modes. Hard drive problems Run Check Disk — Windows XP: 1. Click Start and click My Computer. 2. Right-click Local Disk C:. 3. Click Properties® Tools® Check Now. 4. Click Scan for and attempt recovery of bad sectors and click Start. Windows Vista: 1. Click Start and click Computer. 2. Right-click Local Disk C:. 3. Click Properties® Tools® Check Now. The User Account Control window may appear. If you are an administrator on the computer, click Continue; otherwise, contact your administrator to continue the desired action. 4. Follow the instructions on the screen. Error Messages CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at If the error message is not listed, see the documentation for the operating system or the program that was running when the message appeared. A filename cannot contain any of the following characters: \ / : * ? " < > | — Do not use these characters in filenames. A required .DLL file was not found — The program that you are trying to open is missing an essential file. To remove and then reinstall the program: Windows XP: 1. Click Start® Control Panel® Add or Remove Programs® Programs and Features. 2. Select the program you want to remove. 3. Click Uninstall. 4. See the program documentation for installation instructions. Windows Vista: 1. Click Start ® Control Panel® Programs® Programs and Features. 2. Select the program you want to remove. 3. Click Uninstall. 4. See the program documentation for installation instructions. drive letter :\ is not accessible. The device is not ready — The drive cannot read the disk. Insert a disk into the drive and try again. Insert bootable media — Insert a bootable CD or DVD. Not enough memory or resources. Close some programs and try again — Close all windows and open the program that you want to use. In some cases, you may have to restart your computer to restore computer resources. If so, run the program that you want to use first. Operating system not found — Contact Dell (see Contacting Dell). IEEE 1394 Device Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at NOTE: Your computer supports only IEEE 1394a standard. Ensure that the cable for the IEEE 1394 device is properly inserted into the device and into the connector on the computer Ensure that the IEEE 1394 device is enabled in system setup — See System Setup Program for assistance. Ensure that the IEEE 1394 device is recognized by Windows — Windows XP: 1. Click Start and click Control Panel. 2. Under Pick a Category, click Performance and Maintenance® System® System Properties ® Hardware® Device Manager. Windows Vista: 1. Click Start ® Control Panel® Hardware and Sound. 2. Click Device Manager. If your IEEE 1394 device is listed, Windows recognizes the device. If you have problems with a Dell IEEE 1394 device — Contact Dell (see Contacting Dell). If you have problems with an IEEE 1394 device not provided by Dell — Contact the IEEE 1394 device manufacturer. Keyboard Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at Check the keyboard cable — Ensure that the keyboard cable is firmly connected to the computer. Shut down the computer (see Before Working on Your Computer), reconnect the keyboard cable as shown on the setup diagram for your computer, and then restart the computer. Ensure that the cable is not damaged or frayed and check cable connectors for bent or broken pins. Straighten any be...